TTWiFi: Time-Triggered Communication over WiFi

  • Authors
  • Lusty C, Estivill-Castro V, Hexel R
  • UPF authors
  • ESTIVILL CASTRO, VLADIMIR;
  • Authors of the book
  • AA. VV.
  • Book title
  • apos;21: Proceedings of the 11th ACM Symposium on Design and Analysis of Intelligent Vehicular Networks and Applications
  • Publisher
  • Association for Computing Machinery
  • Publication year
  • 2021
  • Pages
  • 35-44
  • ISBN
  • 9781450390811
  • Abstract
  • WiFi is prevalent in mobile robotics and the Internet of Things (IoT) despite the fact that many applications in these environments require real-time communication. WiFi does not guarantee timeliness and often introduces unbounded communication delays. We present TTWiFi, a time-triggered protocol for fault-tolerant real-time communication between devices situated in a broadcast domain, that only requires minor changes to IEEE 802.11 parameters and remains standards-compliant in critical aspects. We implemented TTWiFi on a representative platform and benchmarked our implementation with TCP and UDP over unmodified WiFi. Our results demonstrate that unlike the latter, TTWiFi has the ability to maintain communication in a congested environment while exhibiting fail-silent behaviour crucial for fault tolerance and real-time communication.
  • Complete citation
  • Lusty C, Estivill-Castro V, Hexel R. TTWiFi: Time-Triggered Communication over WiFi. In: AA. VV.. DIVANet '21: Proceedings of the 11th ACM Symposium on Design and Analysis of Intelligent Vehicular Networks and Applications. 1 ed. Association for Computing Machinery; 2021. p. 35-44.